We've shared numerous cables and tools you should have in your go bag, but the last thing you want is to root through piles of stuff just to find one charger. The Mojo Treble Keychain combines an iPhone charger, Android charger, SD card reader/thumb drive, and SIM-ejecting pin into one, tiny tool.

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This little keychain (available in black or white) packs a ton of stuff into a small space, letting you charge and sync nearly any phone and store data like a thumb drive (via the micro SD card reader) through its USB connection. It also comes with a small pin for ejecting your phone's SIM card, but it's also perfect for resetting a router or performing any other "pin reset" task, making this a great tool to have with you wherever you go. It costs $25 on Amazon, but considering a normal charging cable from Apple costs $20, that's actually a pretty good deal. Hit the link to see more.